Surname Hajun (Hajun 
) , across the world, is a rare family name. The cognomen Hajun is habitual in Malaysia, where it is a rare surname, Philippines, where it is a very rare surname, and France, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Philippines, India, and Malaysia. More prevalently, Hajun is the forename as well as the last name.